Method of forming separable fastener sliders



March 14, 1933. J. poux 1,901,189

METHOD OF FORMING SEPARABLE FASTENER SLIDERS Filed April 5, 1929 5 Sheets-Sheet l I or-) IN VEN TOR.

A TTORNE Y March 14, 1933. R. J. Poux METHOD OF FORMING SEPARABLE FASTENER SLIDERS Filed April 5, 1929 5 Sheets-Sheet 2 .ziaza'ncz J 1 011.7

INVENTOR.

A TTORNEYS.

March 14, 1933. R J. poux 1,901,189

METHOD OF FORMING SEPARABLE FASTENER SLIDE-RS Filed April 5, 1929 5 SheetsSheet 3 l N VEN TOR.

' ATTORNEY March 14, 1933. R 'pou 1,901,189

METHOD 01".FORMING SEPARABLE FASTENER SLIDERS Filed April 5, 1929 5 Sheets-Sheet 4 IN VEN TOR.

A TTORN E Yl 1 0202102 JRwy R. J. POUX March 14, 1933.

METHOD OF FORMING SEPARABLE FASTENER SLIDBRS Filed April 5, 1929 5 Sheets-Sheet 5 Bland) B0146 INVENTOR.

ATmRNEYj.

PATENT OFFICE BOLAND I. 20111, 01 IBADVILLE,

PENNSYLVANIA, ASSIGNOB TO HOOKLIESS FASTENER OOIPANY, OIIIAIDVILLE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA mon 01' roams SEPARABLE FABTENEB SLIDEBS Application fled April 5,

This invention relates to the method of forming separable fastener sliders and particularly the type of sliders shown and described in Sundback Patent No. 1,661,144 dated February 28, 1928.

The principal object of this invention is to provide a new and improved method wherein separable fastener sliders malay be manufactured quickly and economic y.

Another object is to provide a method of formi separable fastener sliders in a substant' y continuous operation.

Another is to provide a method of forming separable fastener sliders wherein a continuous strip of metal is fed to a plurali of forming machines whereby a number sliders may be formed thereon while the same are connected to each other in strip form.

A further object is to provide a method of forming-separable fastener sliders wherein a plur 'ty of sliders ma be formed on a continuous strip of metal continuous succedvecoiningu 5.1 1;

1 u rd thatth d mgo ra ons,1no or e ersma be up and economically manufacturer; ith e foregoing and other objects in viewwhichwillbeaparentfromthedetailed description to ollow, this invention consists in certain novel forming o tions which will be readily understoml y those skilled in the art.

In the drawings, which 411111;? invention:

illustrate the presigure 1 is afragmcntary perspective view of the strip of metal from which the sliders are to be formed; i V

rtion of g Fig. 2 is a rspective view of a the metal strip showing diamond pod and r shaped protuberances formed thereon during the coining operation for a nufmber of sliders. f 1 f ig. 3 is a perspective view 0 a portion 0 the strip illustrated in Fig. 2 showing the indentations formed in the -shaped protuberances during the indenting operation;

perspective view of a portion of Fig. 4 is a the strip illustrated in Fig. 3 showing the same blanked to the contour of the sliders;

1929. Serial No. 352,793.

Fig. 5 is a perspective view of a portion of the strip illustrated in Fig. 4 showing certain edges thereof chamfered;

ig. 6 is a perspective view of a portion ofthe strip illustrated in Fig. 5 showing the flanges formed thereon during a flangeformin operation;

Fig. is a perspective view of a portion of the strip illustratedin Fig. 6 showing the flanges sheared ofi, and showing one of the sliders cut off from the strip;

Fig. 8 is a perspective view of one of the cut-01f sliders bent into final form;

Fig. 9 is a diagrammatic side view of the several apparatuses for forming the sliders showing a continuous metal strip passing therethrough 10 is an enlarged side view of the strip-carrying reel illustrated in Fig. 9;

Fig. 11 is an enlarged side view of the coining press shown in Fig. 9;

Fig. 12 is an enlarged side elevation of the annealing furnace, shown partly in section;

F 13 is a perspective view of the dies for forming the indentations provided in the rectangular-shaped protuberances;

Fig. 14 is a perspective view of the dies used in the blanking operation;

Fig. 15 is a perspective view of the dies used in the chamfering operation;

Fig. 16 is a perspective view of the dies used in the'flange-forming operation;

Fig. 17 is a pers ctive view of the dies used in the fiangecaring operation;

Fig. 18 is a perspective view of the slider cut-01f die.

Heretofore separable fastener sliders of the type shown and described in Sundback Patent No. 1,661,144' dated February 28th, 1928, were manufactured in accordance with the general process shown and described in my co-pending application, Serial No. 179,- 223, filed March 29th, 1927. In accordance with this method of manufacture, partially formed slider blanks were individually moved from one machine to another machine for performing the necessary sequence of operations, until the slider was completed. This individual handling of each slider for each forming operation required complicated handling machinery, and was very costly.

The present invention proposes an imroved method of formin the sliders wherey the time of forming t e same is reduced to a minimum, the machinery is greatly simplified, and the production supervised b each operator is greatly increased. Broad 1y stated, the present invention consists in progressively subjecting a metallic strip to a series of forming operations to progressively roduce slider elements that can be severe from the strip as it leaves the last machine.

Referring to the accompanying drawings, in wh'ch like numerals refer to like parts throng out the several views, and particu larly to Fig. 9 which illustrates the several machines for forming the sliders, the strip metal 1 rolled upon a reel 2 and from which the sliders are to be formed, successively passes through a coining press 3, an annealing furnace 4, an indenting press 5, a blanking press 6, a chamfering press 7, a flange forming press 8, a shearing machine 9, and finally a cut-01f machine 10 where each slider is severed from the metal strip 1.

Referring to Fig. 9, a large quantity of strip stock 1 of suitable material and of the shape shown in Fig. 1 is rolled upon the reel 2 which is rotatably mounted upon a shaft 11 carried by supportin standard 12. As the metal strip 1 is unro led, it passes through the coining press which is provided with suitable rolls 13 which flow the metal of the strip 1 to the correct thicknesses, and form aced diamond-shaped raised ortions 14 on one side and spaced rectangu ar lugs 15 on the other side thereof. The lugs 15, as shown in Fig. 2, are spaced the same as the raised portions 14 and are positioned slightly in advance of the raised portions 14. The coining ress 3 hardens the metal of the strip 1 to sue an extent that it is preferably annealed to soften it for subsequent forming operations. This is accomplished b passin the strip 1 through ports 16 and 1; form in the walls of the annealing furnace 4 that is shown artly in section in Fig. 12. A substantial y constant temperature is maintained in the furnace 4 so that the metal strip 1 leavingl the same through the port 17 will be of t e desired uniform softness.

The metal strip 1, as it leaves the annealin furnace 4, passes to the indenting maclnne 5 which is provided with the indenting apparatus illustrated in Fig. 13. This aparatus, as shown in the view, comprises a ass or bed 18 having a longitudinal guide groove 19 therein for receiving the raised portions 14 on the metal strip 1 as it is moved over the bed 19, a lug clamping member 20, and dies 21. When one of the lugs 15 reaches a predetermined position over the bed 19 the clamping member 20, having an open-sided notch 22 in its lower face, automatically moves downwardly so that the bottom faces 24 of the clamp 20 engage the upper surface of the strip 1 adjacent to the end faces of the lug 15 to firmly clamp the same in place against the bed 18, and at the instant of clamping the dies 21, havinglends of the desired shape, automatically and simultaneously move inwardly toward each other, striking'opposite sides of the lug 15 at the same instant and upsetting the sides of the same to form the depressions 23 therein.

These depressions or indentations 23, which areshown in Fig. 3, are formed to receive the pull tab (not shown) used to operate the slider.

The metal strip 1 passes from the indenting machine 5 to the blanking machine 6 which is provided with the apparatus shown in Fig. 14. This apparatus blanks the sliders to the form shown inv Fig.4 andcomprises a die 25;havin the correct recesses therein, and the blan ing punch 26. The blanking punch. 26 strikes the metal and forms the slider blank 27 defined b the contour line 29. This blanking punc 27 is so designed that it cuts away the scrap 30,.leaving each blank 27 connected with the adjacent blank by a narrow sfripofmetal 28, the scrap 30 being carried along by the movement of the metal strip 1 and dropped out as the blank 27 clears thedie 25. This completes the blanking operation.

The next operation is a chamfering operation which takes place asthemetal strip 1 movesfrom the machine 6 to. machine 7. The machine 7 is provided with the die shown in inverted position in Fig. 15 to more clearly illustrate the position of the slider blank The metal strip 1, now having the appearance illustrated in ig. 4, slides along an, anvil 31 having a rectangular groove 32 which receives and guides the lugs .15. ,When one of the blanks 27, comprising two op ositely disposed portions interconnected y the diamond-shapedraised portion 14, reaches a predetermined position on ;the anvil 31, a die 33 having chamfering edges 34 moves upwardly and strikes the four sharp edges of the blank 27 adjacent the raised fers the same, forming flatted surfaces 35 thereon.

The strip 1, after it leavesthe chamfering machine 7,pa sses to the formingmachinefi which 15 provided. with the apparatus shown in Fig. 16. apparatus is also shown in inverted position, and comprises a bed 36 which is providedwith dies 37, and a coop eratlng punch 38, the shape of which is the same ias the s'lidlblfihkfibut of lesser di-' mension s. HE ch slider blank 21 'as it enters the forming machine '8, is guided against the die as -S 7,2 1 wheei re he rr determmed position, the punch .me bsr 38 moves upwardly and. strikes the same,. forcportion 14 andchamloo ing the metal into the die recesses 39 to form flanges 40 along its sides substantially as shown in Fi s. 16 and 6. I

The meta strip next moves to the shearing machine 9 which shaves oil the rou h edges of the flanges 40 and brings them to e proper height. The shearing machine 9 is provided with a supporting base 41 which each slider blank- 27 straddles as it enters the ma- 10 the blank 27 against the base 41, and a pair of spaced blocks 43 having knife edges 4.4 which move lon 'tudinally alon the blank 27 and shear ofl' t e rough edges 0 the flanges 40 on each side of the blank, substantially as shown in Fig. 17 so that the flanges 40 willbe of the correct dimension. 1 The metal strip 1'then moves ing or cut-01f machine '10. This machine, as shown in Fig. 18, is provided with a guide base 45 and cut-off punch 46. The unch 46 moves downwardly when the blank 2 reaches a predetermined position and cuts off the in terconnecting metal portion 28 on the line 47 5 as indicated in Fig. 18, leaving the projecting connections 28 on the adjacent blank. When the adj acent-blank moves into position, this portion 28 is severed from the same as well as the similar portion on the other end thereof. The finished slider blank 27has the appearance as indicated in Fig. 7, and comprises two oppositely disposed identically shaped channeled portions A and B interconnected by the metal of the blank and the raised diamend-shaped portion 14, the (portion B being provided with the indente lug 15. The slider so formed is then bent into completed form by bending the portion B back over the portion A substantially midway between the .ends of the diamondshaped raised portion 14 so that the'flan'ges 40 on opposite sides of the plortion B face the channels 40011 the sides of t e portion A substantially as shown in Fig. 8. The V-shaped channeled portions rovided by the flanges 40 serve as guides or theinterlocking fastener sections on which the slider is to be used, and the 'bent diamond-shaped portion 14 serves as a cam for locking and unlocking the fastener secions. In the apparatus described for forming the fastener sliders, the several machines are preferably timed sothat each one performs its operation on aslider blank on the strip at the same instant the others are rforming operations on other blanks. In t is way the metal strip 1 can be moved a certain distance and then stopped, at which time each machine performs an operation on a blank, then the strip maybe moved until the next adjacent slider blank is in osition to be operated on by its machine, an soon.

It is plainly evident to those skilled in the art, that fastener sliders can be produced 05 cons derably quicker and much more economin quantity pro chine, a clampin plunger 42,. which clamps to the sever- Vnace for anne ically by the present invention than by previous methods, principall because of the saving of time, the savin 0 metal, and the elimination of manual la or. The saving in labor is a large item in the manufacture of sliders of the t herein shown, especially 7 uction. Then too, there is the safetyfactor. In the previous methods, where one man operated a single machine, it was necessary for the operator to place eac slider in its die for forming a single opera-- tion and to remove the same when the operation was completed. These operators were continually in danger of havin their fingers and hands injured by the various dies and punches. It is evident that this danger, is substantially eliminated in the present invention.

It is further evident that many other advantages are gained by the useof the resent invention in the manufacture of sli ers for se arable fasteners.

. t is to be und rstood that numerous changes may bemade in the various steps of the method described without departing from the spirit and scope of the present invention, and that it is-desired to not limit the invention to the exact method herein set forth, as it is desired to claim the same broadly as well as specifically as indicated in the appended claims.

What I claim is:

1. The method of forming separable fastener sliders by a series of successive operations, which includes feeding a continuous stri of metal to a coining press for forming a p urality of spaced lugs on said strip, feedin' said strip to a blanking die for b anking said strip to the shape of a series of interconnecting slider elements each ofwhich 'has two flat winflglportions connected by a narrow relatively ck portion, said blanks being connected inthe strip,- and feeding said strip, to a severing machine for cutting said elements from said strip. 1 a

2. The method of forming separable fastener sliders .by a series of successive operations, which includes in successively feeding a continuous strip of'metal to a coining press for forming a plurality of s aced lugs on said strip, passing said strip t rough .a furling the same, fee ing said strip to a bl 'ng die for blankingfsaid stri to the ships of a series of interconnected sli er. elements,- each including a lug, and feeding said strip to a severin machine for cut said elements fromsai strip.

3. he method 'of forming separable fastener sliders by aseries of successive operations, whichincludes feeding a continuous stri of. metal to a coining press for forming feedin said strip to a press for flanging the sides said elements, and feeding said strip to a severing machine for cutting said elements from said strip.

4. The method of forming separable fastener sliders by a series of successive operations, which includes feeding a continuous strilp of metal 'to a coining pres for formin a p urality of spaced lugs on said stri fee ing said strip to a blanking die for b anking sa1d stri to the shape of a series of interconnected s ider elements, each includin a lug, feeding said strip to a press for anging the sides ofsaid elements, feeding said strip to a shearin machine for trimming said flan es, and eeding said strip to a severing ma ine for cutting said elements from sai strip.

5. The method of forming separable fas-- tener sliders by a series of successive operations, which includes feeding a continuous strip of metal to a coining press for forming a plurality of spaced lugs on said strip, feeding said strip to an.indenting die for forming depressions in the sides of said lugs, feeding said strip to a blanking die for'blanking said strip to the shape of a series of interconfor annealing the same, feeding said strip to nected slider elements, each including a lug,"

and feeding said strip to a severing machine for cutting said elements from said strip.

6. The method of forming separable fastener sliders by a series of successive operations, which includes successively feeding a continuous strip of metal to a coining press for forming a series of spaced lugs on one side of said strip, and forming a series of s aced diamond-shaped raised portions on t e other side of said strip, feeding said strip to a blanking die for blanking said strip to,

the shape of a series of interconnected slider elements, each'includin a lug and a raised portion, and feedingsaid strip to a severing rsrlachine for-cutting said elements from said 11). a 7. The method of forming separable fastener sliders by a series of successive operations, which includes progressively feeding a continuous strip of metal to a blankingrmachine for forming a series of pairs of connected slider elements on said strip, feeding said stripto a chamferin'g machine for chamfering certain edges of said pairs of elements, feeding said strip to, a forming machine for flanging the sides of said pairs of elements, feeding said strip to a shearing machine for trimming the edges of said flanges and feeding said strip to a cutting machine for severing connected pairs of said elements from said strip. v

8. The method of forming separable fastener sliders by a series of successive operations, which includes progressively passing a continuous strip of metal through a furnace a blanking machine for forming a series of pairs of connected slider elements on said strip, feeding saids'trip to a chamferin machine for chamferin certain edges 0 said airs of elements, eeding said strip to a ormin machine for flan'ing the sides of said pairs of'elements, feeding said strip to a shearing machine .for trimming the edges of said flan es and feeding said strip to a cuttin machine for severing connected pairs of sai elements from said strip.

9. The method of forming separable fastener sliders by a series of successive o rations, which includes pro essively feeding a continuous strip of metaf to a coming press for forming a series of spaced lugs on one side thereof and a series of spaced diamondshaped raised portions on the other side thereof, passing sald strip through a furnace for annealing the same, feeding said strip to an indentin machine for forming de ressions in the si es of said lugs, feeding sai strip to a blanking machine for forming a series of pairs of slider elements, each air includin a lug and being interconnected by a diamon shaped raised portion, feeding said strip to a chamfering machine.for chamfering certain edges of said pairs of elements, fee ing said strip to a forming machine for flan ng the sides of said pairs of elements, feeding said strip to a shearing machine for trimming the edges of said flanges and feeding said strip to a cuttin machine for severing connected pairs of said elements from said strip.

10. In a method of forming separable fastener sliders, the steps consisting of formin a series of connected slider blanks each 0 which has flat wing portions connected by a narrow relatively thick portion in stri form bending up flanges on the edges of saidlilanks while in strip form, severing the blanks apart and bending each blank to make a completed slider. n

11. The method of forming separable fastener sliders by a series of successive operations which comprises forming a series of connected slider blanks in a metal strip each of said blanks having two flat wing portions, each of which is wider at one end than at the other end, and connected by a relatively narrow neck ortion, said slider blanks being connected y relatively narrow integral portions of the strip, bendin up flanges on the side edges of each of said wing portions of said blanks while so connected, cutting out said integral connecting portions to separate said blanks, and bending the neck portion of each blank until said wings are substantially parallel.

12. The method of forming separable fastener sliders by a series of successive o rations which comprises forming a series 0 connected slider blanks in a metal strip, each of said blanks having two flat wing portions, each of which is wider at one end than at the other end, and by a relatively narrow neck 'on, said slider blanks being connected relatively narrow integral portions of the strip, bending up flanges on the 5 sit ie edges of each of said wing portions of sa d blanks while so eonnerted, and trimming 8I.ld flanges while mid blanks are connected m the'stnp.

In testimony whereof I aflir my 5' attire. ROLAND J. UK!

CERTIFICATE (I m0.

Patent No. Lfil, 189. he! 14, 1933.

ROLAND I. roux.

It is hereby certified that after aypeara in the printed apeeiiieatimei the above mfliered patent requiring correction as tellers: Page 3, line 113, clai- 2, strike eat the word "in"; at! that the sail Letters Patent ale-1d be read with this eorreetion therein that the me II] enfortn the record oi the case in the Patent Office.

Signed and sealed this 23111 day a! lay, A. I). I933.

Linen.

(Seal) Aeti Gumiesiuer of Patents.

other end, and by a relatively narrow neck 'on, said slider blanks being connected relatively narrow integral portions of the strip, bending up flanges on the 5 sit ie edges of each of said wing portions of sa d blanks while so eonnerted, and trimming 8I.ld flanges while mid blanks are connected m the'stnp.

In testimony whereof I aflir my 5' attire. ROLAND J. UK!

CERTIFICATE (I m0.

Patent No. Lfil, 189. he! 14, 1933.

ROLAND I. roux.

It is hereby certified that after aypeara in the printed apeeiiieatimei the above mfliered patent requiring correction as tellers: Page 3, line 113, clai- 2, strike eat the word "in"; at! that the sail Letters Patent ale-1d be read with this eorreetion therein that the me II] enfortn the record oi the case in the Patent Office.

Signed and sealed this 23111 day a! lay, A. I). I933.

Linen.

(Seal) Aeti Gumiesiuer of Patents. 

